we have new imaging techniques that are used, such as the body scans used for soft tissues, lymph nodes, there are a variety things that are on the horizon. >> another way of treating prostate cancer is radiation and we have on the screen there a -- an image of radiation treatments. what do we see there, dr. manyak? >> well, you see a schematic representation of what would be termed external beam radiation therapy which is an outside -- a source outside of the body directing the beam towards the prostate area. >> yeah, what are the risks and what are the unfortunate negative side effects? >> well, radiation has similar risks to surgical approach in this area, you can have both incontinence and erectile sfunction. >> was radiation considered to you rather than the radical surgery? is there i considered all of it. >> did he give you that option? >> yes, i had that option. >> did you rule that out? >> i did personally. >> you wanted to make sure you had gotten rid of the cancer? >> that's right. what was available in the i used the john hopkins medical library as my source, and from my rea